Staple making and driving tool



Aug. 2% 9 w mmwsfi P. RZSSMAN STAPLE MAKING AND DRIVING TOOL Filed Dec. 5. A92! fihsets-Sheafi; 1

M INVENTOR.

ATTORNEY.

Augo O Filed Dad. 5. 3 Sheets-Sheet 2 iNVENTDR a w V ATZURA%EC Au 260 m4. 1,506,085

, 'F.RE$MAN STAPLE MAKING AND DRIVING TOOL Filed Dec. 5. 1921 3 Sheets-Sheet 5 I INVENTOR.

W .Ai w,

TORNEY.

Patented Aug. 26, 1924.

UNITED STATES PAUL mssuan, or person, moment.

STAPLE MAKING AND DRIVING TOOL.

Application filed December 5,. 1921. Serial 1Y0. 520,027.

To all whom it may concern:

Be it known that I, PAUL RISSMAN, a citizenof the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Staple Making and Driving Tool, of

which the following is a specificatlon.

This invention relates to portable means for forming fastening devices, particularly staples, from wire and for driving them immediately after'being made, and-its object is to provide a structure of this character which shall be so small and light that it can be moved about and manipulated with one hand, leaving the other free for other purposes, which-shall be simple in construction, which shall carry its own supply of wire, and which can be driven-by a flexible shaft connected to a stationarymotor of any desired type.

This invention consists of a staple forming and driving device embodying a case which can be carried about in one'hand, a wire-holding spool mounted on the case and means to feed the wire to a staple former, a

staple forming device and a staple driving 1 device, and means for actuating the wire feeding, staple forming and staple driving mechanism.

It further consists in a main driving shaft for actuating the staple forming and driving mechanisms, a constantly running flexible shaft, a trigger controlled device whereby a connection between the two shafts is I made, and means to disconnect the shafts Fig. 6 is a plan of a staple. Figs. 6 to 12 after each staple is driven.

It also consists in the details of construction illustrated in the accompanying drawings and particularly set forth in the claims.

In the accompanying drawings, Fig. 1 is a side elevation, Fig. 2 is a front elevation, and Fig.3 is a plan of this novel staple forming and drivin 'machine. Fig. 4 is a central vertical section thereof. Fig. 5 is a view showing the feed rolls in section and the main portion of the casein elevation.

inclusive are sections on the lines 6--6 to 12-12 inclusive respectively of Fig. 4-. Fig. 13 is a perspective of the staple-bending dog. Fig. 14. is a plan of the movable portion of the staple shear and bender. Fig. is a plan of the staple driver or hammer.

Similar reference characters refer to like parts throughout the several views.

The case of this tool is formed of two parts l and 2 secured together by means of screws 3. The mechanism is driven in any desired manner but I have shown a flexlble shaft which is connected to; the internal mechanism as follows. A flange 4 at the bottom of the part 1 is bored to receive a bushing 5 (Fig. 4) held in positionby a nut 6. In this bushing is rotatably mounted a short sleeve 7 having a central hole in 85 which a pin 8 is secured. A flexible sheath 9 has a thimble 10 in its end which is held against the sleeve 7 by a nut 12. The flexible shaft 13 On the sleeve is a pinion 14,; and the main shaft 26 has a reduced end which extends into this sleeve 7 and also supports a sleeve which embodies a gear 16 and a clutch member 18 and is loose on the main shaft.

A second. bushing 19 is secured intha flange 4 and constitutes the bearing for the short shaft 20 which carries the gear 21 and.

pinifin 22 and is held in position by the 80 screw 23. The gear 21 meshes with the pinion 14 and the pinion 22 with the gear 16 so thatby these devices the clutch member 18 is driven by the shaft 13 but ata very reduced rate.

A pair of lugs 24 on either part of the case carr a bearing sleeve 25 in which the main she 26 is mounted and which makesone revolution for each cycle of the machine.

A head 27 on the lower end of this shaft has so fingers 28 adapted to fit in grooves 29 in the 34, whose upper end is normally held out ward by the spring 35. This pin also supports a forked arm 36, shown in plan in Fig. 100' 10, having a slot 37 whose reduced end 38 is adapted to receive the reduced end39 of a dog 40. This arm 36 and sleeve are normally held up by the spring 41 but are pressed down to engage the clutch members 106 18 and 31 when the trigger 34: is pressed and held in. When the sleeve 30 and shaft 26 have made one rotation, the small cam 42 on the clutch member 31 strikes the lower end of the dog and swings it into the ,110

larger portion of the slot 37, whereupon the spring 41 raises the arm 36 and disengages is halved as is the pin 8 and held matchedwith this pin within the sleeve 7.

If 7 desired, the parts 8 and 13 may be integral.

This sleeve 30 is also the clutch members. When the trigger is released, the spring '35- presses it outward which carries the shoulder 43 on the dog above the forked arm 36 whereu on the -spring 41 swings the lower end 39 into the reduced portion 38 of the slot 37. The parts are now in position for the forming and driving of the next staple. For each staple to be driven, therefore, the operator presses.

. 49, a cylindrical drum 50' an arms 51 whose up-turned inner ends have ears .52 adapted to enter the groove 53 in the, hub 47 and thus hold the spool rotatably in position, and a second disk 54.

0n the part 1 is an inclined rid e 55 fitted with bushings 56 and 57 in whic the feed shaft 58 is rotatably mounted. A lug 59 on this ridge is fitted with a bushing 60 which carries the shaft 61 of the idler roller 62 which engages with the roller 63 on the feed shaft 58. A bevel gear 64 on the feed shaft meshes with the teeth 65 on the mutilated-gear 66 near the upper end of the main shaft 26 which thereby drives these'rollers a suficient' distance to feed a proper amount of the wire 48 to the staple forming device. A small case 67 may enclose these rollers which make one rotation for each staple and may be stopped at'each rotation by aspring 68 whose outer end engages in a notch 69 in the roller 63 shown in Fig, 5.

The parts 1 and 2 are formedwith brackets 70 which support a guide plate 71 on which the shear member 72 is slidable between the guides 73 shown in cross section'in Fig. 11. The wire 48 is fed across the front end of the shear member 72 by the rollers 62 and 63 which feedthis wirein .through a pro er hole 85 in one of the guides 73, ass own-in Fi 3, 11 and 15. The shear member is mov back and forth by an eccentric 74 on the main shaft 26, a connecting rod 75 and a down from the shear mem r Extending up from the outer end of the guide plate 71 are two lugs 77 (Figs. 4, 12 and 15), which carry a in 78 on which a dog 79 is mounted. .See ig. 13. The doghas outwardly extending arms 80 and has a transverse groove 81 in the lower side of the inwardly extending tongue 82 to receive thesta 1e wire. A spring 83 (Fig. 12) nor-.

mall olds down this ton e 82, the width of w ich 'is slightly less t the guide groove 84 in the shear member ning .which the staple A .being forced entirely p)? 76 extending an the width of 72 (Fig. 14). This. spring is a coilof well known construction having one end extending to and resting on a lug 77 and the other end resting on an arm 80, but these details are omitted. The outer end of the guide plate at the lugs 77 is built up level with the middle ortion ofthe shear member, as shown in Flg. 4, so as to constitute a continuous slide-way for the staples. Y

While the staple wire is fed through the hole 85 across the path of the shear member and across the space between the guides 73 and along the notch 81 in the dog 79,. the

shear member is near the rear end of its stroke. It then moves outward and shears the staple wire and at the same time bends it so the ends of the staple lie at each side of the tongue 82 of-the dog 79. During this time, the heavy spiral spring 87 at the upper tatable in the bushing 91 in the hub 47 A connecting rod 93 extends from the crank in 88 to the pin 94 on the hammer 195 which is slidable between the guides 96 on the shear member 72, that is, in the groove 84. The outward end of the hammer engages the inner end of the dog 79 at about the beginof the outward-stroke of the shear member and of the hammer. As this dog I prevents outward movement of the hammer, the spring 87 istensioned tiall one half of the rotat on of the main sha and during nearly the entire shearing and bending operations of the shear member 72 and the dog 79. At the end of the outward movement of the shear'member the inclined In 98 thereon enga e under the shoulders 9 on the dog and ift it; This is the position of the parts in Fig. 4. At

this instant the released hammer is driven ,during substanoutward by the spring 87 and pushes the sta Is A ahead of it along between the gl ndes 99 on the guide plate 70, these guides 99'" being practically continuations of the guides 96 on the shear member between is formed, the sta lo I out of the tool by t is action of the hammer and being worked on.

- A shield 101 ma be mounted over the shear member, the og 79 and thehammer, being secured against the part 102 of the case. While this staple formin and driving machine is especially adapte for fastenin upholstering and other coverin ve icles and furniture, its use is not limited thereto as it can beused for any other nailing and stapling where the amount of work is sufiicient to warrant the necessary installation.

. The details and roportions of the several into thev article sfor spring to actuate the hammer, and

I by thoseskilled in the art without departing from the'spirit of my invention as set fort in the following claims.

I claim i 1. In a staple forming and driving tool, a case adapted tobe he (1 in a hand of an operator and a guide therein, a shearing and bendin member slidable in the guide, means for eeding wire thereto, a hammer to force the staple out of the tool, a shaft to control the operation of the hammer, a a main shaft to actuate the wire feedingx means, ammer. 2.- In a staple ormin a guide therein, a shearing operator and member slidable in the guide,

and bendin means, for eeding wire thereto, a hammer te force the staple out. of the tool, a spring to actuate the hammer, a main shaft to actuate the wire feeding means, the staple forming means and the hammer, a shaft to transmit power to the tool, a manually controlled clutch to connect the power shaft to the main shaft and a lever operable by the fingers of the hand holding the tool to control said clutch. Y

3. In a staple formin and driving tool, a 'case adapted to be he d in a hand of an operator and a guide therein, a shearing and bendin member slidable in the guide, means for eeding wire thereto, ahammer to force the staple out of the tool, a spring to actuate the hammer, a main shaft to actuate the wire feeding means, the staple forming means and the hammer, a power shaft, a clutch to connect the power shaft to the main shaft, a manually operable trigger to move the clutch to operative position and a flexible shaft connected to said main shaft to rotate the same and permit the tool to be carried about. i l

4. In a staple forming and driving tool, a case adapted to be held in a hand of an operatorand a guide therein, a shearing andbending member slidable in the guide,

means for feeding wire thereto, a hammer.

to force the staple out of the'tool, a spring to actuate the hammer, a main shaft to actuate the wire feeding means, the staple j forming means and the hammer, a power shaft, a clutch to connect the power shaft to the main shaft, a manually operable trigger to move the clutch to operative position, and/means to release the.,clutch at theend of one rotation of the main shaft. 5. In a staple formin and. driving tool,

a case adapted to be he d'in a hand of an 7 operator and a guide'therein, a shearing and bending member slidable in the guide,

means for feeding wire thereto, a hammer to force the staple out of. the tool, a spring to actuate the hammer, a main shaft to actuate-the wire feeding, means, the staple forming means and the hammer, a power shaft, a pinion at the upper end thereof, reducing gears and, a clutch member connected to said inion, a clutch sleeve slidable on the main s aft and adapted to engage the clutch member for each actuation of the staple forming and driving mechanism and means to control the clutch and operable by the fingers of the hand holding the tool. 1

6. In a tool for forming and driving 7 to be held in-a hand of an operator, a main shaft therein, a wire-holding spool mounted on the end of the case co-axial with the main shaft and detachable from the case,

a guide in said case, means to feed the wire across the guide, a shearing and forming member slidable in the guide, means connecting to the shaft to actuate said member, a hammer to drive the. fastener, and resilient means connecting to the shaft and hammer whereby the hammer may be actuated. c

' 8. In a staple formingand driving tool, the combination of a case, a main shaft therein, a wire-holding spool rotatable on the case, a feed shaft on the side of the case at an angle to the main shaft, gearing whereb the feed shaft is driven intermittently y the main shaft, an idler shaft mounted parallel to the feed shaft, feed rolls for the wire mounted on the feed shaft and idler shaft, staple shearingand forming means in the case and means connecting K them to the main shaft, a hammer to drive the staples, and means to actuate the hammer.

9. In a staple forming and driving tool, the combination of a case and a guide plate therein, a shear member slidable in the guide plate, a hammer slidable on the shear member, means to positively actuate the" shear member, resilient means to actuate the ,hammer', a dog on which the staples are bent, which dog is normally in the path of the hammer, and means on the shear memher to move the dog to release the hammer after the staples are formed.

10. In a staple forming and driving tool,

the combination of a case and avguide plate therein, a shear member slidable in the guide late, a hammer slidable on the shear memer, means to positively actuate, the shear member, resilient means to actuate the hammer, a dog on which the staples are bent, which dog is normall in the path of the hammer, and means on t e shear member to move the dog to release the hammer after the staples are formed, said guide plate bein formed witha pair of lugs between whic the hammer may slide and on which said dog is pivoted.

11. In a staple forming and driving tool, the combination of a case, a. main shaft therein and formed with an eccentric, a guide plate, a shear member slidable on-jthe plate, a connecting rod between said eccentrio and the shear member, means to feed staple wire through a hole in the guide plate into the path of the shear, a dog on which wire ma be bent to form a staple, and stapl'e-dnvin means resiliently connected to the shaft, sai dog preventing the ration of said driving means until move out'of the path thereof by said shear member. y

12. In a staple forming and driving tool, the combination of a case, a Imain shaft therein and, formed. with an eccentric, a

guide plate, a shear member slidable on'the plate, a connecting rod between said eccentrio and the shear member, meansto feed staple wire through a hole in the guide-plate into the pathof the shear, a dog on which wire may be bent to form a staple, and staple-driving means resiliently connected to the shaft, and comprising a. hammer slidable on the shear member and a spring connected to the shaft to actuate the hammer.

13. In a staple forming and driving tool,

the combination of acase, a main shaft v therein and formed with eccentric, a guide plate, a shear member slidable on the the spring is attached, a hammer for driv- V ingthe staples slidable vonv the shear memher, and ,a connecting rod between the hammer and crank pin.

14. In a staple forming and driving tool,

the combination of a case, a main shaft therein and formed with an eccentric, a

guide plate, a shear member slidable on the plate, a connecting rod between said'cccentrio and the shear, member, means to feed staple wire through a hole in the guide plate into the path of the shear, a dog on which wire may be bent to form a staple,

a clock-sprin connected to the main shaft. :1 crankfi'ee y rotatable about the axis of the main shaft, a crank pin on. the crank to which the spring is attached, a hammer for driving the staples slidable on the shear .member, a connecting rod between the. hammer and crank pin, said dog being nor-' mally in the path of saidhammer to hold it stationary while the staple is formed and the s ring tensioned, and means on the shear r to move the dog out of the path of 10 mem the hammer. PAUL RISSMAN. 

